Thanks to anyone willing to offer me some help here. Short story is I was "tasked" to help a fellow ham check out this radio before it was simply plugged in and avoid letting the magic smoke out of the supply. I'm not new to tubes and definitely not electronics so I said sure no problem. This is a Swann 350 with the standard 117x external supply. Having never even seen one of their radios made this intriguing. I went through the usual good visual inspection and discovered very swelled electrolytics with broken off leads in the supply. So I placed an order and recapped the entire supply. All voltages on the rail indicated normal values with minimal ripple. From here I went and gave this a careful air blast to remiove the dust as there was a decent film everywhere. Next I cleaned all the switch and pot contacts with DeOxide (well actually it's Cramolin - I still have a bottle of that). This is all what I consider normal maintenance for older equipment. Unfortunately the radio seems to have been stored in some dusty damp basement before it landed on my lap so i have my work cut out for me it seems... Next came the dim bulb test with everything hooked up to the house mains via a variac and slowly brought it to life. All seemed to indicate a good living setup. A quick test on receive only with my doublet antenna and she came to life after a good minute warmup. Actually it was a good sounding radio! The radio was dead in any transmit/tune mode from what I could tell. Back to the supply and i discover the 12Vdc is gone at the Jones plug. Took that apart and discovered a broken wire. that's all fixed now. Back to testing the radio and a quick click of the mic and I could tell the radio was dead for transmit. A swing of the receive/tune cw switch confirmed that as the radio definitely dimmed, solenoids clunked and my outside security cameras and internal settings went haywire. Yup - she transmitted alright but only in tune/cw mode. I jumped the PPT switch to be sure and no results there. I'll admit I'm not 100% positive on the actual working condition of the mic here and i don't have a spare to play with. A quick look with a DMM and I do get some resistance readings and the PPT button does work it seems. I'll assume for the moment the mic is good. I popped the top of the solenoid and it's very clean in there but I did spray those contacts to be good. I pulled out the old Hickok 539 and did test all but the power tubes and I didn't find and concerns at the moment. So I'm looking for some pointers from those that might have seen this problem or simply know of where to look. I troubleshot myself into a corner as they say. Time to take a step back and re-evaluate things as I've learned over the years. So now that you know the story - sorry it turned out to be a bit long - I just wanted to cover all corners here so we don't go down the rabbit hole of 101 questions of did you do this or that. Just being helpful to those interested. Thanks in advance!